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混养,就是在同一池塘中实行不同种类、不同年龄与规格鱼类的养殖。混养能充分利用池塘水体和池塘中的天然食物及人工饲料,是提高池塘鱼产力的一条行之有效的好途径。那么,河蟹和塘虱鱼能否混养呢? 某水产养殖场,一九八六年五月下旬曾将80万尾塘虱鱼夏花放入河蟹养殖池中混养(此时河蟹个体重在50克以上),经过一个月的养殖,将池水抽干,发现塘虱鱼数量大减,仅存几百条幸存者,后仍将池水充满,经三、四个月的养殖又发现河蟹数量大减,结果,混养失败了,经济上
Polyculture, that is, in the same pond in different species, different age and size of fish farming. Polyculture can make full use of pond water and pond natural food and artificial feed, is to improve the pond fish productivity an effective way. So, crab and pond louse fish can polyculture it? An aquaculture farm, in late May 1986 800,000 pond louse summer flowers into the crab culture pond polyculture (at this time crab individual weight In more than 50 grams), after a month of breeding, the water drained and found that the number of pond louse fish greatly reduced, only a few hundred survivors, after the water will still be filled after three or four months of breeding and found crabs The number of greatly reduced, the result, polyculture failed, economically